When safely removing (Leap 15.1, KDE, Dolphin) USB mass storage, it powers off and can’t be remounted from Dolphin without plugging out/in or powering off/on. This is a really annoying problem for me and it did not happen with Leap 42.
How can I prevent powering off USB mass storage after safely removing it? Or how can I turn power back on? All that without plugging anything out/in or powering off/on.
It is assumed that if you are ‘safely removing’ a removable device via Dolphin that you are about to unplug it, otherwise why select that function?
Anyway, it is possible to reinitialise a USB device (without physically disconnecting and reconnecting again) using ‘usb-reset’ or similar code…
I am running virtual Leap 15.1 guest under Leap 15.1 host. When I safely remove USB mass storage from the guest, I can’t access it from the host (or the guest) any more. I can’t access the physical devices because I am operating the host computer remotely.
Anyway, it is possible to reinitialise a USB device (without physically disconnecting and reconnecting again) using ‘usb-reset’ or similar code…
Nope, it can’t see the USB mass storage device after it has been powered off after safely removing.
I found a solution. Drive can be safely removed with udisksctl without powering off:
udisksctl unmount -b /dev/sde1
If needed drive can be powered off (after unmounting all partitions):
udisksctl power-off -b /dev/sde
This information should have been mentioned in your opening post.
The usb-reset needs to be done from real-hardware (the host).
Yes, unmounting is all that is required.
Although not specifically answering your question…
You may find this bug report 402660 – Device notifier clears a device after unmount, but before unplug worth reading, particularly some of the later posts, as initially it may not seem relevant.
I tried that (running as root) with real hardware. After power is off, usb-reset can’t find the device. It works for the devices that lsusb sees and lsusb can’t see powered off USB mass storage.